Lederlin 380L

The Lederlin 380L (marketed in North America as the Ladybug) is an unconventional light aircraft developed in France in the 1960s, and marketed for homebuilding.

380L Ladybug
Lederlin 380L (F-PMET) at Laval aerodrome, 15 August 1969
Role Sport aircraft
National origin France
Manufacturer Homebuilt
Designer François Lederlin
First flight 14 September 1965

Development

François Lederlin developed the 380L from the Mignet HM.380 "Flying Flea", and eventually created a new aircraft sharing only its choice of wing profile and general configuration.[1]

Like the Pou-du-Ciel, the 380L is a tandem wing design, with the forward wing mounted on a set of cabane struts forward of the cockpit, and designed to pivot in flight, to vary its angle of incidence. Otherwise, it is unlike the original Mignet HM.14, having side-by-side seating for two in a fully enclosed cockpit, and a neatly cowled engine. The fuselage is of steel tube construction, metal-skinned at the front and fabric-covered to the rear, and the wings have fabric-covered wooden structure. The tailwheel undercarriage is fixed.

Specifications

Data from Jane's all the world's aircraft, 1975-76[2]

General characteristics

  • Crew: 2
  • Length: 4.77 m (15 ft 8 in)
  • Wingspan: 7.92 m (26 ft 0 in)
  • Height: 2.08 m (6 ft 10 in)
  • Wing area: 9.92 m2 (106.8 sq ft) forward wing; 7.43 m2 (80.0 sq ft)
  • Airfoil: 3-40-13
  • Empty weight: 360 kg (794 lb)
  • Max takeoff weight: 600 kg (1,323 lb)
  • Fuel capacity: 85 L (22 US gal; 19 imp gal) in a single fuel tank
  • Powerplant: 1 × Continental C90-14F 4-cyl. air-cooled horizontally-opposed piston engine, 67 kW (90 hp)
  • Propellers: 2-bladed McCauley fixed pitch metal propeller, 1.83 m (6 ft 0 in) diameter

Performance

  • Maximum speed: 201 km/h (125 mph, 109 kn) at 300 m (980 ft)
  • Cruise speed: 161 km/h (100 mph, 87 kn) at 600 m (2,000 ft)
  • Stall speed: 49 km/h (30 mph, 26 kn) power off
  • Never exceed speed: 233 km/h (145 mph, 126 kn)
  • Range: 855 km (531 mi, 462 nmi)
  • Service ceiling: 3,660 m (12,010 ft) +
  • Wing loading: 34 kg/m2 (7.0 lb/sq ft)
  • Power/mass: 0.111 kW/kg (0.0675 hp/lb)

Notes
  1. Falconar kit/plans Ladybug 380L
  2. Taylor, John W.R., ed. (1975). Jane's all the world's aircraft, 1975-76 (66th annual ed.). New York: Franklin Watts Inc. p. 74. ISBN 978-0531032503.

References
  • Taylor, Michael J.H. 1989. Jane's Encyclopedia of Aviation Studio Editions p. 570
  • Jane's All the World's Aircraft 1977–78. Jane's Publishing pp. 493–494
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